eu tentei instalar os packages para a correlação e acontece-me o seguinte:
install.packages("ppcor") --- Please select a CRAN mirror for use in this session --- Warning: unable to access index for repository http://cran.fiocruz.br/bin/windows/contrib/2.15 Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.15 Warning messages: 1: In open.connection(con, "r") : unable to resolve 'cran.r-project.org' 2: package ‘ppcor’ is not available (for R version 2.15.1) library(ppcor) Error in library(ppcor) : there is no package called ‘ppcor’ require(ppcor) Loading required package: ppcor Warning message: In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE, : there is no package called ‘ppcor’
install.packages("ds") Warning: unable to access index for repository http://cran.fiocruz.br/bin/windows/contrib/2.15 Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.15 Warning message: package ‘ds’ is not available (for R version 2.15.1) require(ds) Loading required package: ds Warning message: In library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE, : there is no package called ‘ds’
obrigada. An Rocha